1SE2

STAPHYLOCOCCAL ENTEROTOXIN C2, MONOCLINIC FORM

• PDB DOI: https://doi.org/10.2210/pdb1SE2/pdb

• Classification: TOXIN
• Organism(s): Staphylococcus aureus
• Mutation(s): No 


• Deposited: 1995-07-20 Released: 1996-03-08 
• Deposition Author(s): Swaminathan, S., Sax, M.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.70 Å
• R-Value Free: 0.320 
• R-Value Work: 0.196 
• R-Value Observed: 0.196 

Literature

Residues defining V beta specificity in staphylococcal enterotoxins.

Swaminathan, S., Furey, W., Pletcher, J., Sax, M.

(1995) Nat Struct Biol 2: 680-686

• PubMed: 7552730 
• DOI: https://doi.org/10.1038/nsb0895-680
• Primary Citation of Related Structures:  
  1SE2, 1SE3, 1SE4


• PubMed Abstract: 
  

  The three-dimensional structure of staphylococcal enterotoxin C2 has been determined at 2.7 A resolution by x-ray diffraction, while the structures of enterotoxins A and E have been modelled based on their sequence homology to other staphylococcal enterotoxins. The T-cell receptor-binding sites of staphylococcal enterotoxin (SE) B and SEC2 are compared and the stereochemical interactions likely to be responsible for their differing V beta specificities are identified. A similar comparison is made between SEA and SEE.

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Organizational Affiliation: 

Biocrystallography Laboratory, VA Medical Center, Pittsburgh, Pennsylvania 15240, USA.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 27.62 kDa 
• Atom Count: 1,914 
• Modelled Residue Count: 235 
• Deposited Residue Count: 239 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
STAPHYLOCOCCAL ENTEROTOXIN C2	A	239	Staphylococcus aureus	Mutation(s): 0
UniProt
Find proteins for P34071 (Staphylococcus aureus) Explore P34071  Go to UniProtKB:  P34071

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.70 Å
• R-Value Free: 0.320 
• R-Value Work: 0.196 
• R-Value Observed: 0.196 
• Space Group: P 1 2₁ 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 43.43	α = 90
b = 69.92	β = 90.1
c = 42.22	γ = 90

Software Package:

Software Name	Purpose
X-GEN	data collection
X-PLOR	model building
X-PLOR	refinement
X-GEN	data reduction
X-PLOR	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 1996-03-08 
Deposition Author(s): Swaminathan, S., Sax, M.

Revision History  

• Version 1.0: 1996-03-08
  Type: Initial release
  
• Version 1.1: 2008-03-24
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2024-06-05
  Changes: Data collection, Database references, Other, Refinement description
• Version 1.4: 2024-10-23
  Changes: Structure summary